Some email related changes:Email data is now viewable via the File manager (a new icon on the top right in the Email view).
Email data is stored separately from box data. A new mail.tar.gz (or mail directory in rsync mode) is created now at the top level. In theory, this makes it now possible to create backups, list backups and restore the Email data separately just like we have for apps. Maybe we will implement that in some future release as use cases arrive.
Mailbox backup / restore - There is no special UI for this. But one can now "restore" a mailbox by just uploading old mailbox from a backup and uploading it into the new mailbox via the File manager UI. Mailboxes are in the "vmail" directory in the above screenshot.